ROM Hack PLEASE HELP! (Graphics Hacking)

[ChrisMims]

I'm trying to change the graphics of some characters on a ds game (.NCLR - Palette and .NCBR - Image)
I am shocked by the ease of using Tahaxan to view the pictures, but I need to find a program that will allow me to edit the image file and create a new palette so I can replace them from the rom. I use DSLazy to unpack the rom and repack it, but that doesn't help edit the image.
I have also been able to dump the images, but I can't get them back to .NCLR and .NCBR

I have checked Romhacking.net, which is very helpful, but doesn't provide the tools, or documentation, for ds rom graphics hacking.

 

[ChrisMims]

Does anybody here edit ds rom graphics? I know there's a way, b/c I've seen it done in the ds. (I don't remember the game or where I found the hack) I just need to change the pictures.

 

[DarthNemesis]

Try crystaltile2.

 

[ChrisMims]

That's what I use, and this may be a huge noob question, but you need to use a HEX Editor to hack the graphics?

 

[DarthNemesis]

 

[FAST6191]

Hex editor graphics hacking?
I will leave you to discern the file format and/or compression (that is a whole other topic)
Once you have done that though using a hex editor a bit like doing it the hard way (if you have the graphics displayed you have already won the battle).

Long story short you have 4bpp, 8 bpp and bitmap.
4 bpp uses a single hex digit to represent a pixel but they are flipped in the bytes. Common in earlier games as it only affords a smaller palette.
8 bpp uses a single byte. Common in newer games.
bitmap uses the hex to describe the entire 15 bit colour (16 bits but the upper bit is not used to give each colour 5 bits.

I cover the basics in http://www.4shared.com/get/89576992/e01c2f...m_hacking2.html (I cover DS icons)
http://nocash.emubase.de/gbatek.htm#dsvideo also has it.

And the GBA is near identical to the DS and is identical in layout so this is good:
http://www.coranac.com/tonc/text/toc.htm

 

[ChuckBartowski]

DarthNemesis: how is yours in english? I have it, but i can barely understand it.

 

[FAST6191]

cory1492 (and apparently I helped somehow) translated it at one point. It should be included in the latest downloads but you probably also want to read this thread:
http://gbatemp.net/index.php?showtopic=131...t=0&start=0